Infura Development Tutorials, Guides & Insights

const axios = require('axios');

// Replace with your actual Etherscan API key
const apiKey = 'YOUR_ETHERSCAN_API_KEY';

// Replace with the Ethereum address you want to query
const address = '0xYourEthereumAddress';

// Etherscan API URL to fetch wallet balance
const url = `https://api.etherscan.io/api?module=account&action=balance&address=${address}&tag=latest&apikey=${apiKey}`;

async function getWalletBalance() {
  try {
    const response = await axios.get(url);
    const balanceInWei = response.data.result;

    // Convert balance from Wei to Ether
    const balanceInEther = balanceInWei / 1e18;
    console.log(`Wallet Balance: ${balanceInEther} ETH`);
  } catch (error) {
    console.error('Error fetching balance:', error);
  }
}

getWalletBalance();

• API: This script sends a GET request to Etherscan's API to fetch the balance of the specified Ethereum wallet.
• Use Case: Ideal for applications needing read-only access to Ethereum data.

In this tutorial, we will walk through how to use Ethers.js along with Infura to send Ethereum transactions and interact with smart contracts. Infura provides scalable access to Ethereum nodes, allowing you to interact with the blockchain in real-time without running your own node.

By the end of this tutorial, you will be able to send Ether, call smart contract functions, and deploy contracts using Infura as your provider.

If you plan to use Infura as your Ethereum provider, follow these steps:

Now, let's create a script to query the balance of an Ethereum wallet. This script will work with both Infura and public nodes.

• Description: A smart contract testing framework for Ethereum, built on top of Ethers.js.
• Key Features:
• Advanced testing capabilities with concise syntax.
• Support for generating test smart contracts in Solidity.
• Easy integration with Hardhat.
• Generates comprehensive coverage reports.
• Website: Waffle

• Description: A web-based IDE for writing, testing, and deploying Solidity smart contracts.
• Key Features:
• Real-time Solidity compilation and error reporting.
• Integrated debugging tools and console.
• Supports testing and deploying contracts directly to Ethereum networks.
• Extensive plugin ecosystem for additional features.
• Website: Remix IDE